The TOTX197 is a fiber‑optic transmitting module designed for simplex digital signal transmission up to 6 Mb/s over distances of up to 40 m. It uses a TTL interface and a GaAs LED light source.
The handbook details electrical and optical characteristics, recommended supply and input voltages, application circuit examples, connector options, and extensive precautions for soldering, vibration, shock, and disposal. It also includes maximum ratings and guidance for long‑term reliability.
| Data rate | DC to 6 Mb/s (NRZ code) |
|---|---|
| Transmission distance | Up to 40 m |
| Typical supply voltage | 4.75 V – 5.25 V |
| Input voltage range | -0.5 V to +0.5 V |
| High level input voltage (VI) | 2.0 V |
| Low level input voltage (VIL) | 0.8 V |
The module supports a data rate of up to 6 Mb/s using NRZ coding.
Typical supply voltage is 4.75 V to 5.25 V, and the absolute maximum is 7 V.
Solder at 260 °C or less for no more than three seconds and avoid flux contacting the emitting surfaces.
The LED contains GaAs, which is toxic; disposal must follow local regulations and avoid releasing dust or fumes.